The Rocca Borromeo di Angera, or Rocca d’Angera, also called Borromeo Castle, is a castle
that stands on a lakeside hilltop in the limits of the town of Angera in the Province of Varese
on the Southern shores of Lago Maggiore.
It is visible from across the lake from Arona, where originally stood another castle
formerly owned by the Borromeo family.